Fault finding 5 - 10
Doc.nr : Rc400-Manuale_v20_e.doc
1.C. Portable control unit and electronicbox.
Whole system non-functional, but:
Control unit red LED lit, electronicbox POWER LED lit and LED 4 blinking.
1.C1. During radio control: Test using cable control ( control cable ).
If it works with the cable, there is probably a fault in the radio transmitter, radio receiver
box or in their connections. ( Does the radio control unit match this electronicbox i.e. same
ID code ? )
1.C3. During cable control ( control cable ):
Probably a fault in the control cable. Check the cable connections/contacts.
1.C4. Change and try a new control cable.
1.C5. Change and try a new control unit.
1.C6. Change and try a new electronicbox.
1.D. Portable control unit.
The red LED on the control unit does not light when the ON/SIGNAL/FREQ.-SHIFT switch is
pressed.
( cable or radio control ).
( The electronicbox switch MANUAL / OFF / REMOTE must be in REMOTE position, with POWER LED lit
and LED 4 blinking).
1.D1. Twist up the emergency stop switches on the portable control unit and on the crane.
1.D2. Radio control: Change the battery pack, check the condition of the batteries, check
the battery charger, check the battery holder's terminals. Test with cable control.
Cable control: Check the cable control cable and its connection/contacts (breaks,
intermittent contacts, shorts circuits).
1.D3. Unscrew the emergency switch panel and any extra switch panels.
1.D4. Check the connections to the battery, battery pack and control cable and all other
connections to the control unit's electronics card. Check the emergency stop switch,
emergency stop switch contact block. Check the ON/SIGNAL/FREQ.-SHIFT push
button (Breaks ? Check continuity of the push button). Check the LED.
1.D5. Radio control: Remove the radio transmitter card ( short circuits / high current
consumption ?).
1.D6. Remove all manoeuvre levers ( abnormally high current consumption ? ).
1.D7. The control unit's electronics card is probably defective.
1.D8. Contact the service workshop, distributor or Scanreco, Sweden.
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